Update filebeat input docs (#19110)

andrewkroh · web-flow · commit 925b36e5e905 · 2020-06-12T10:14:46.000-04:00
Include unix input.
Change s3 to S3.
Change "Azure eventhub" to "Azure Event Hub".
diff --git a/filebeat/docs/filebeat-options.asciidoc b/filebeat/docs/filebeat-options.asciidoc
@@ -99,3 +99,5 @@ include::inputs/input-syslog.asciidoc[]
 include::inputs/input-tcp.asciidoc[]
 
 include::inputs/input-udp.asciidoc[]
+
+include::inputs/input-unix.asciidoc[]
diff --git a/x-pack/filebeat/docs/inputs/input-aws-s3.asciidoc b/x-pack/filebeat/docs/inputs/input-aws-s3.asciidoc
@@ -8,7 +8,7 @@
 === s3 input
 
 ++++
-<titleabbrev>s3</titleabbrev>
+<titleabbrev>S3</titleabbrev>
 ++++
 
 beta[]
diff --git a/x-pack/filebeat/docs/inputs/input-azure-eventhub.asciidoc b/x-pack/filebeat/docs/inputs/input-azure-eventhub.asciidoc
@@ -6,7 +6,7 @@
 === Azure eventhub input
 
 ++++
-<titleabbrev>Azure eventhub</titleabbrev>
+<titleabbrev>Azure Event Hub</titleabbrev>
 ++++
 
 Users can make use of the `azure-eventhub` input in order to read messages from an azure eventhub.
